Stage-lighting device.



R. NAUJOKS.

STAGE LIGHTING DEVICE. APPLICATION PI'LED MAR. 7, 1912 Patented Nov. 19,1912.

' succession. lVit-h these and other objects in' UNITED sfrntrns PATENTOFFICE RUDOLF NAUJOKS, OF'FRANKFOBT ON-THE-MAIN, GERMANY, ASSIGNOR TO,THE FIRM 01E DB. "ING. SCHNEIDER & NAUJOKS ELEKTRIZITATS-J GE$ELLSCHAFTMIT BE- SGHRANKTER HAFTUNG, 0F FRANKFORT-ON TI-IE-MAIN, GERMANY.

STAGE-LIGHTING nnvron.

Specification of Letters Patent.

Patented Nov. 19, 1912.

Application filed March 7, 1912. Serial No. 682,246.

To all whom it may concern: v

Be it known that I, R- noLr NA JOKB, a subjectof the German Emperor, anda resident of Frankfort-on-the-Main, Germany,

or more of which may be put into operative or reflecting positionrelatively to the source of light to produce any desired color effectsand dimming or changes from light to dark ness. And the object of theimprovements is to provide a lighting apparatus of this class in whichthe apparatusfor regulat ing and coloring the light are combined into acompact device by means of which the different hues and colors of thelight are producedwithout switching in different lamps,

and in which. there is no cover of transparcut or translucent materialwhich would ab;

sorb a part of the light, and in which even where a large number ofcolors is provided the said colors can be used in any desired view myinvention consists in arranging the source of light within a system'ofreflectors which consists of a plurality of differently coloredreflectors which are movable relatively to one another, and which areconcentrically arranged about a common axis.

In order that my invention be more clearly understood an exampleembodying the same has been shown in the accompany.- ingdrawing inwhich'the same letters of reference have been us d in all the viewstoindicate corresponding parts.

In said drawing-F-igure 1, is'a side view of the light projectingdevice, and Fig. 2, is a horizontal section thereof seen from below. h

For the purpose of explaining the invention in detail I have shown inthe accompanying drawing a light projecting device which is particularlyadapted for lighting a stage from above. As shown the apparatus consistsof a stationary partihylindrical reflector e and aplurality of movablepartl-cylindrical reflectors f, g, h, which are arranged concentricallyof the stationary reflector e andof onejan'other, and which areconnect-- vedhy arms m with disks a mounted for rotation on a centraltubular shaft 2'. Prefers ably the width of themovable reflectors isabout 'one half the width of the stationary reflector and-they areadapted to'be separately moved over the surface of the stationaryreflector. Such movement may be imparted to the reflectors in anypreferred way. the example shown in which the apparatus is mounted acertain distance above the floor I prefer to move the reflectors bymeansof cords Z secured to the disks and passed over pulleys 7c.

" The source of light a -is equ pped with a reflector b of suitable formwhich is adapted to throw all thelight emanating from the sourcea on thelefthand part of the reflector to berefleoted therefrom tothe stage.

As shown the said source of light and reanarm secured to fiector aremounted on the shaft 2'. f

Preferably the stationary reflector e. is

covered at its inner side with a reflecting coating of white color, andthe movable reflectors f, g, it have reflecting coatings of differentcolors. The latter are usedfor fiector and imparting thereto differenthues. For this purpose either one of them or a suitable number thereofcan be shifted with the whole or a part of their surfaces in front ofthe portion ofthe stationary reflector e which is lighted by the sourceof light a. If it isdesired to have gradual regulating the lightemanating from the recolor changes or dimming efiects, the colored Whenusing movable reflectors which are reflectors are slowly moved in frontof the lighted portion of the-stationary reflector.

partly or entirely black, the light can be gradually changed from lightto dark, or vice versa. s

By reason of the cylindrical. form of the reflectors thelightingapparatus is very favorable in thisrespect, that the path of compact,and the distribution of light is the light rays is as shortas possible,and

the entire stream of light emanates from.

the apparatus at anangle which is the most favorable one forlighting'the various parts of the stage.

The number of movable reflectors can be as large as is necessary in eachcase. However, in order to keep the number of the movable reflectorsmounted at any time within-the apparatus as low as possible "I prefer tomount the reflectors on the device in such a way, that they can easilybe removed and replaced.

I claim herein as my invention:

1. A light projecting device comprising a source of light, a primaryreflecting surface, a. colored reflecting surface, one of saidreflecting surfaces being stationary and means for adjusting the movablereflecting surface so that itwill be disposed in and out of a positionto receive rays from the source of light.

2. A. ligl'it projecting device. conq nrising a source of light; aprimary reflector, 7;. and a plurality of dill'erently coloredreflecting surfaces arranged one before the other and each adapted to bemoved to and from position to receive rays reflected from the primaryreflector.

3. A light projecting device comprising a source of light, a stationaryreflector in posi ion to reflect rays from said source a plurality ofdifl'erently colored. movable supporting surfaces, and means for movingany of said movable reflecting surfaces between the stationary reflectorand the source of light.

4. A light pro ecting device comprising a source of light, two opposedrelatively stationar reflectors, b, e, a plurality of concei'itricallyarranged parti-cylindrical reflectors, and means for moving anyoi thesaid refiectorsto and from a position between the stationary reflect rs.

5. A light projecting device comprising a source of light, a stationaryparti-cylindrical reflector arranged in reflecting position relative tothe source of light, a plurality of parti-cylindrical. dilii'erentlycolored movable reflectors, concentrically located relatively to eachother and to the stationary reflector, and means for moving one or moreof said movable. reflectors into and from operative position relativelyto the source of light.

6. A light projecting device comprising a source 0t light, and aplurality of dill'er ently colored independent reflectlng surfacesarranged one before the other and each adapted to be moved into positionand out of position. to receive and reflect rays from said. source oflight. p

In testimony whereof I have sigm-id my name to this specification in thepresence or two subscribing. witnesses.

RUDOLF NAUJO'KS.

Witnesses: V

FRANZ Hassnaonriu, ERWIN DE VESELY.

